Oxide dependent wear mechanisms of titanium against a steel counterface: Influence of SMAT nanostructured surface

Abstract

The analysis of the tribological behavior of a steel ball on pure titanium has been carried out under alternative motion on both, a coarse grained Ti surface and its nanostructured derivative obtained by surface mechanical attrition treatment (SMAT). Along the duration of the tribology test, variations in friction behavior were interpreted as a three stages sequence of different wear mechanisms that were controlled by the successive formation of Ti-rich and Fe-rich oxides. Surface nanostructures appeared to change the oxide formation kinetics and delay the formation of a protective Fe-rich third body oxide layer on Ti. The results indicate that apparently contradicting literature results can be explained by taking into account the contamination induced during the SMAT process.

On the high cycle fatigue resistance of austenitic stainless steels with surface gradient microstructures: Effect of load ratio and associated residual stress modification

“…This contamination layer is known to affect the reactivity and corrosion resistance of the SMAT treated surfaces [10]. Its chemistry was also shown to have determining consequences regarding the wear behavior of the shot peened surfaces due to its effect on the exact nature of the abrasive oxides that form during dry contact friction [44]. However, inclined propagation zones are visible in the vicinity of the surface for the shot peened samples, as outlined in Figure 4 b4 by the regions delimited by the curved dotted lines and pointed by the red arrows.…”

Mechanisms of oxide dependent tribological behavior in Ti / Steel sliding and influence of nanostructured surfaces

“…At the end of the test, the stage III friction duration against the SMAT-CT sample was twice higher than that against the SMAT -RT sample. [17]. Anatase transforms into rutile only after having been submitted to sufficiently elevated temperature (over 500 °C) [19].…”

Optimization of tribological parameters to enhance wear and friction properties of Ti6Al4V alloy using Taguchi method

“…Similar studies on tribological behavior of Ti64 against steel counter bodies have been conducted, making it a relatively widely explored field when compared with the tribological characterization of Ti64 against ceramic counter bodies. 28 , 29 , 30 , 31 , 32 , 33 , 34…”

“…Similar studies on tribological behavior of Ti64 against steel counter bodies have been conducted, making it a relatively widely explored field when compared with the tribological characterization of Ti64 against ceramic counter bodies. 28,29,30,31,32,33,34 Among the ceramic materials which are highly wear resistant, Alumina (Al 2 O 3 ) is majorly employed in tribological testing due to its eloquent cost-to-performance ratio over other materials like silicon nitride, zirconia, 35 etc. Hong and Winer 36 conducted a tribological study on commercially pure (cp)-titanium in relative motion with Al 2 O 3 counter body, at both room temperature and at 400 °C. The formation of the tribo-oxide layer was reported.…”